$(function () {
    /**
     * 设置cookie
     * @param cname cookie 的名称
     * @param cvalue cookie 的值
     * @param exdays  cookie 的过期时间
     */
    function setCookie(cname,cvalue,exdays) {
        var d = new Date();
        d.setTime(d.getTime()+(exdays*24*60*60*1000));
        var expires = "expires="+d.toGMTString();
        document.cookie = cname + "=" + cvalue + "; " + expires;
    }

    /**
     * 获取 cookie 值
     * @param cname
     * @returns {string}
     */
    function getCookie(cname) {
        var name = cname + "=";
        var ca = document.cookie.split(';');
        for(var i=0; i<ca.length; i++)
        {
            var c = ca[i].trim();
            if (c.indexOf(name)==0) return c.substring(name.length,c.length);
        }
        return "";
    }

    /**
     * 检测 cookie 值
     */
    function checkCookie(name) {
        var username = getCookie(name);
        if (username == "") {
           location.href = "http://localhost:8006/login.html";
        }
    }

    checkCookie("blogger");
})